@ Anonymous
The 7:56min is from the 3/2006 test which is quoted here as the referenz for the 7:40min, just klick my link which transfers you directly to > Autobild > online archive > 3/2006 test at the Ring with the CLK DTM AMG

The 7:40min time is wrong..during this Autobild test published in 3/2006 the CLK DTM AMG reached a 7:56.50min driven by Walter Röhrl Klaus Ludwig and other real race drivers.. the conditions on that test day was not perfect Walter Röhrl reached at that day only a 7:39min with the Carrera GT ..11s slower as his best timehttp://www.autobild.de/artikel/supercars-treffen-superstars_54963.html